DIE HARD:
Invincibility:
left/right/up/down/square
50 Grenades:
right/square/down/circle
Enemies Float Up When Killed:
down/square/triangle/down
Endless Shotgun:
right/up/down/down/square/right
DIE HARDER (die hard 2):
Invincibility:
down/triangle/right/square
99 Rockets & Grenades's:
right/square/left/circle/triangle/down
Deformed People:
left/triangle/right/down
DIE HARD WITH A VENGEANCE:
Infinite Lives:
left/circle/up/down/square/right
Big Cars:
left/triangle/right/down
99 Turbos:
circle/circle/square/square/down/down/cross/cross
Flying Saucer:
Go to "quit" on the pause screen. Then do this code:
right/square/triangle/down/cross/cross/cross